12.62. Release 0.184
General Changes
- Fix query execution failure for
split_to_map(...)[...].
- Fix issue that caused queries containing
CROSS JOIN to continue using CPU resources
even after they were killed.
- Fix planning failure for some query shapes containing
count(*) and a non-empty
GROUP BY clause.
- Fix communication failures caused by lock contention in the local scheduler.
- Improve performance of
element_at() for maps to be constant time rather than
proportional to the size of the map.
- Improve performance of queries with gathering exchanges.
- Require
coalesce() to have at least two arguments, as mandated by the SQL standard.
- Add
hamming_distance() function.
JDBC Driver Changes
- Always invoke the progress callback with the final stats at query completion.
Web UI Changes
- Add worker status page with information about currently running threads
and resource utilization (CPU, heap, memory pools). This page is accessible
by clicking a hostname on a query task list.
Hive Changes
- Fix partition filtering for keys of
CHAR, DECIMAL, or DATE type.
- Reduce system memory usage when reading table columns containing string values
from ORC or DWRF files. This can prevent high GC overhead or out-of-memory crashes.
TPCDS Changes
- Fix display of table statistics when running
SHOW STATS FOR ....
SPI Changes
- Row columns or values represented with
ArrayBlock and InterleavedBlock are
no longer supported. They must be represented as RowBlock or SingleRowBlock.
- Add
source field to ConnectorSession.
